C:\test>perl -MAlgorithm::Combinatorics=variations -E"$i=variations( [
+'A'..'D'], 3 ); say @$_ while $_= $i->next"
ABC
ABD
ACB
ACD
ADB
ADC
BAC
BAD
BCA
BCD
BDA
BDC
CAB
CAD
CBA
CBD
CDA
CDB
DAB
DAC
DBA
DBC
DCA
DCB

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In reply to Re: How can one generate all possible permutations of r elements out of n where r<n? by BrowserUk
in thread How can one generate all possible permutations of r elements out of n where r<n? by supriyoch_2008

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